Abstract
IN insects a micropyle is formed at the anterior pole of the egg and often has a very complicated structure. Sometimes it is a single pore or it may consist of numerous canals grouped together. The formation of the micropyle is due to a number of follicle cells or nurse cells having protoplasmic prolongations towards the egg, around which the chorion is secreted1. Snodgrass2 pointed out that although a micropylar area is present in the egg of Apis mellifera no actual pores have been demonstrated. There is no published work on the structure of the micropyle in chalcids.
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References
Raven, C. P., Oogenesis: The Storage of Developmental Information (Pergamon Press, 1961).
Snodgrass, R. E., The Anatomy of the Honey Bee (Comstock Pub. Associates, 1956).
Berland, L., Traité de Zoologie, 10, 826 (1951).
King, P. E., Nature, 189, 330 (1961).
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KING, P. Structure of the Micropyle in Eggs of Nasonia vitripennis. Nature 195, 829–830 (1962). https://doi.org/10.1038/195829a0
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DOI: https://doi.org/10.1038/195829a0
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